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    Precompensation of polarization errors in heterodyne interferometry
    27.
    发明申请
    Precompensation of polarization errors in heterodyne interferometry 失效
    外差干涉测量中极化误差的预补偿

    公开(公告)号：US20060087657A1

    公开(公告)日：2006-04-27

    申请号：US11255766

    申请日：2005-10-21

    Applicant: Michael Holmes ,  Andrew Carlson

    Inventor： Michael Holmes ,  Andrew Carlson

    IPC: G01B9/02

    CPC classification number: G01B9/02058 ,  G01B9/02003 ,  G01B2290/70

    Abstract: Apparatus and methods for adjusting the polarizations of the components of an input beam to reduce leakage caused by imperfections in an interferometer are disclosed. The apparatus includes an interferometer positioned to receive an input beam that includes two components having different frequencies and different polarizations, the interferometer including a polarizing beam splitter positioned to spatially separate the input beam into two intermediate beams, the first intermediate beam corresponding to the first component and the second intermediate beam corresponding to the second component, where imperfections in the interferometer cause leakage of one of the components into the intermediate beam corresponding to the other of the components. The apparatus further includes a polarization compensator that includes at least one retardation plate positioned to adjust the polarizations of the components of the input beam to reduce the leakage caused by the imperfections in the interferometer.

    Abstract translation: 公开了用于调整输入光束的分量的极化以减少由干涉仪中的缺陷引起的泄漏的装置和方法。 该装置包括一个定位成接收包括具有不同频率和不同偏振的两个分量的输入光束的干涉仪，所述干涉仪包括偏振分束器，其被定位成将输入光束空间分离成两个中间光束，第一中间光束对应于第一分量 以及对应于第二部件的第二中间光束，其中干涉仪中的缺陷导致其中一个部件泄漏到对应于另一个部件的中间光束中。 该装置还包括偏振补偿器，其包括至少一个相位差板，定位成调整输入光束的分量的偏振，以减少由干涉仪中的缺陷引起的泄漏。

    Rotary stacker and method
    29.
    发明授权
    Rotary stacker and method 失效
    旋转堆垛机和方法

    公开(公告)号：US5000436A

    公开(公告)日：1991-03-19

    申请号：US486900

    申请日：1990-02-26

    Applicant: Michael Holmes

    Inventor： Michael Holmes

    IPC: B65H29/18 ,  B65H29/22 ,  B65H31/26

    CPC classification number: B65H29/18 ,  B65H31/26 ,  Y10S414/12

    Abstract: A rotary stacker and method wherein a stream of web units such as napkins is advanced along a longitudinally extending path in longitudinally spaced relation toward and over a magazine, each napkin being pressed into the magazine by cams applying pressure at a plurality of longitudinally spaced areas over the magazine and orienting the cams so as to remove the pressure on the upstream cam just prior to the entry of the leading edge of a unit subsequent to the one being pressed and while maintaining the pressure on the previously pressed unit by the downstream cams.

    Method and apparatus for engine control and combustion quality detection
    30.
    发明授权
    Method and apparatus for engine control and combustion quality detection 失效
    用于发动机控制和燃烧质量检测的方法和装置

    公开(公告)号：US4896639A

    公开(公告)日：1990-01-30

    申请号：US130620

    申请日：1987-12-09

    Applicant: Michael Holmes

    Inventor： Michael Holmes

    IPC: F02D35/02 ,  F02D41/14 ,  F02D45/00 ,  F02P5/145 ,  F02P5/152 ,  F02P5/153

    CPC classification number: F02D35/027 ,  F02D41/1498 ,  F02D41/2438 ,  F02D41/2474 ,  F02P5/1455 ,  F02P5/152 ,  F02D2041/281 ,  F02D2041/286 ,  F02D2200/1015 ,  F02D35/023 ,  Y02T10/46

    Abstract: An engine control and combustion quality detection system and method are provided for an internal combustion engine having at least one control input such as spark advance angle or air/fuel ratio. A base value is established for the control input and the control input is periodically perturbed about the base value. A sensor senses an engine parameter such as knock or engine roughness representing the combustion quality of the engine and provides an output representing this engine parameter. A slope calculation device receives the output from the sensor when the control input is being perturbed about the base value and determines the slope or differential of the output from the sensor to determine the engine parameter as a function of the control input, thereby to provide an indication of combustion quality of the engine. By determining the combustion quality of the engine by calculating the slope of the sensor output when the perturbation device perturbs the first control input about the established base value, the noise component of the sensor output is substantially eliminated. The slope of the sensor output should be at or close to zero when combustion quality is acceptable.

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